(3aS,9bR)-Methyl 1-methyl-3-phenyl-1,2,3,3a,4,9b-hexa­hydro­chromeno[4,3-b]pyrrole-3a-carboxyl­ate

In the title compound, C20H21NO3, the heterocyclic six-membered ring adopts a half-chair conformation and the pyrrolidine ring adopts an envelope conformation. The mol­ecular conformation is stabilized by C—H⋯O and C—H⋯N inter­actions

cis-3-Methyl-1-phenyl-8a,9,10,11,12,12a,12b-hexa­hydro-1H,3bH-pyrazolo[3,4:2′,3′]pyrano[4′,5′,6′-kl]xanthene

The asymmetric unit of the title compound, C23H22N2O2, contains two independent mol­ecules, A and B. The cyclo­hexane ring of mol­ecule B is disordered, with occupancies for the major and minor conformers of 0.570 (9) and 0.430 (9), respectively. The cyclo­hexane ring adopts a boat conformation in mol­ecule A and in the major conformer of mol­ecule B, and a chair conformation in the minor conformer of mol­ecule B. In both independent mol­ecules, one of the dihydro­pyran rings adopts a boat conformation while the other is in a half-chair conformation. The dihedral angle between the pyrazole and phenyl rings is 16.0 (1)° in mol­ecule A and 12.9 (1)° in mol­ecule B. The crystal packing is stabilized by C—H⋯O and C—H⋯N inter­molecular hydrogen bonds

Methyl 3-(4-bromo­phen­yl)-1-methyl-1,2,3,3a,4,9b-hexa­hydro­benzo[f]chromeno[4,3-b]pyrrole-3a-carboxyl­ate

In the title compound, C24H22BrNO3, the dihydro­pyran ring adopts a half-chair conformation, whereas the pyrrolidine ring is in an envelope conformation. The bromo­phenyl group is oriented at an angle of 66.44 (4)° with respect to the naphthalene ring system. In the crystal structure, mol­ecules are linked into centrosymmetric dimers by C—H⋯π inter­actions and the dimers are connected via C—H⋯Br hydrogen bonds. The crystal structure is further stabilized by π–π inter­actions [centroid–centroid distance = 3.453 (1) Å]

1-(4-Methoxy­phen­yl)-7-phenyl-3-(phenyl­selenylmeth­yl)perhydro­isoxazolo[2′,3′:1,2]pyrrolo[3,4-b]azetidine-6-spiro-2′-chroman-2,4′-dione

In the title compound, C35H30N2O5Se, the pyrrolidine ring adopts an envelope conformation and the oxazolidine ring is in a twist conformation. The tetra­hydro­pyran ring adopts a half-chair conformation. The methoxy­phenyl ring is twisted away from the attached azetidinone ring by 15.7 (1)°. In the crystal structure, inter­molecular C—H⋯O inter­actions link the mol­ecules into a two-dimensional network

N-[2-(3,4-Dimeth­oxy­phen­yl)eth­yl]-N-methyl­benzene­sulfonamide

In the title compound, C17H21NO4S, the phenyl and dimeth­oxy­phenyl rings are almost perpendicular to each other, making a dihedral angle of 82.57 (5)°. The structure is stabilized by inter­molecular C—H⋯O inter­actions and the packing is further enhanced by C—H ⋯π inter­actions

(1′S)-4-(3,4-Dichlorophenyl)-1′-(3,5-dimethoxyphenyl)-1,2,3,4-tetrahydronaphthalene-2-spiro-2′-pyrrolizidine-3′-spiro-3′′-indoline-1,2′′-dione

In the title compound C37H32Cl2N2O4, the unsubstituted pyrrolidine ring shows a twist conformation whereas the substituted pyrrolidine ring shows an envelope conformation. The dimeth­oxy benzene ring is perpendicular to the tetra­lone ring, making a dihedral angle of 89.94 (5)°. Mol­ecules are linked into centrosymmetric dimers by N—H⋯O hydrogen bonds and the crystal structure is stabilized by C—H⋯π inter­actions and C—H⋯O hydrogen bonds. One meth­oxy group is disordered over two positions with the site occupancy factors of 0.84 (2) and 0.16 (2)

Ethyl 1-(4-methoxy­phen­yl)-2-nitro-3-[4-oxo-3-phenyl-1-(4-methoxy­phen­yl)azetidin-2-yl]-2,3,10,10a-tetra­hydro-1H,5H-pyrrolo[1,2-b]isoquinoline-10a-carboxyl­ate

In the mol­ecule of the title compound, C38H37N3O7, the pyrrolidine ring adopts a twist conformation and the six-membered heterocyclic ring has a boat conformation. In the crystal structure, mol­ecules are linked into a three-dimensional framework through inter­molecular C—H⋯O hydrogen bonds. One ethyl group is disordered over two positions with occupancies 0.67 (2)/0.33 (2)

Methyl 3-(4-bromo­phen­yl)-2-(1H-indol-3-ylmeth­yl)-5-[1-(4-methoxy­phen­yl)-4-oxo-2-phenyl­azetidin-2-yl]-4-nitro­pyrrolidine-2-carboxyl­ate

In the title compound, C37H33BrN4O6, the pyrrolidine ring adopts an envelope conformation. The β-lactam ring is planar and makes dihedral angles of 70.16 (13) and 28.32 (13)° with the phenyl and 4-methoxy­phenyl rings, respectively. The mol­ecular packing is stabilized by intra­molecular C—H⋯O inter­actions and the crystal packing is determined by inter­molecular N—H⋯O hydrogen bonds, and C—H⋯O and C—H⋯π inter­actions

Methyl 3-[ferrocen­yl(hydr­oxy)meth­yl]-1-methyl-2′-oxospiro­[pyrrolidine-2,3′-indoline]-3-carboxyl­ate

In the title compound, [Fe(C5H5)(C20H21N2O4)], the pyrrolidine ring exhibits an envelope conformation with the spiro-C atom deviating from the plane of the remaining four atoms. The pyrrolidine ring is almost perpendicular to the indolinone ring [dihedral angle = 87.52 (7)°]. The structure is stabilized by an intra­molecular O—H⋯N hydrogen bond and by inter­molecular C—H⋯O and N—H⋯O inter­actions

Ethyl 2-[4-(benzyloxy)anilino]-4-oxo-4,5-dihydro­furan-3-carboxyl­ate

In the title compound, C20H19NO5, the dihydro­furan ring is almost planar [maximum deviation of 0.021 (2)°] and makes dihedral angles of 28.1 (7) and 54.5 (5)° with the benzyl and phenyl­amino rings, respectively. The mol­ecular packing is stabilized by intra­molecular N—H⋯O hydrogen bonds and inter­molecular C—H⋯O inter­actions